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I've read here in the forum that it is typically not a big deal to raise the domain functional level if all DCs are on the same level. We began our Windows environment with Server 2003 and have since moved to Server 2008 R2 which all of our DC are at. I looked in the AD Domains and Trusts and it shows that the current Domain Functional Level is at Windows 2000 native. I'm not sure if when Server 2003 was installed that it was set lower than 2003 for some odd reason and has been at that level ever since. (before I had control of the dcs :)

I now want to raise it but should I raise it from the Windows 2000 native where it is currently at to Windows Server 2003 THEN go to Server 2008R2 for the next step (2 step process) or just take one big step from functional level 2000 to 2008R2?

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8 Replies

If you have no 2003 DC's left, then go for it. Raising the level only affects GPO's and gives you enhancements to Active Directory. 2008 R2 would be what you want to go to at a minimum if you have all 2008 R2 DC's now.

If you have no 2003 DC's left, then go for it. Raising the level only affects GPO's and gives you enhancements to Active Directory. 2008 R2 would be what you want to go to at a minimum if you have all 2008 R2 DC's now.

Agreed. Raise it to the highest level of the lowest DC you have. If all your DC's are 08 then their is no reason to keep it at 2k or even to step it up. Go ahead and go right to 2008.